Talk about what brought you to the counseling center in the first place. Tell the group members what is bothering you. If you need support, let the group know. If you think you need confrontation, let them know this also. It is important to tell people what you expect of them.
Unexpressed feelings are a major reason why people experience difficulties. Revealing your feelings (self-disclosure) is an important part of group therapy and affects how much you will be helped. The appropriate disclosures will be those that relate directly to your present difficulty. How much you talk about yourself depends upon what you are comfortable with. If you have any questions about what might or might not be helpful, you can always ask the group.